Relief-valve.



A. POSPESEL.

RELIEF VALVE.

APPLICATION FILED MAR. 14, I916.

Patented July 25, 1916.

gnaw bo a esip A niaEw-rosns sn or oswEeo, YOR f RELIEF-VALVE;

l To all ivhomz' tlmay concern ,Be it kno-wn thatl, A 1mm gPOSlEiSEL, citizenmof thesUnited States, residing at *Oswegmyin theeount y o f Oswego a nd State of ';New York, d have invented certain :new I I 1 and-useful Improvements in Relief-Valves,

of which the following is a specification.

."Thisjinvention hasfor its object'theprovision of simple andgefiicient means whereby the water of condensation in a steamheatfl j ing system may, be} readily drained there- 1 I {ca 1y pointed out in the following the from.j Y it I .w ,The invention isillustrated inthe accoma panying drawings and will be hereinafter ffirstfnlly described and then more" specifi description. a

Inthe drawings: Figure lis'a plan view of a device embodying my invention; Fig. 2,

is a sectional elevationofltlie same; and,

a Fig. 3 isa detail end viewg;

Incarrying out myrinventiom l secure to the steam heating pipeor' conduit, by which therheating fluid is car-ried,an outlet, or vent pipe 1 which will preferably be threaded into aysuitable, opening inan said steam pipe, although it may be, connected therefl.

with in any convenient or preferred manner which will afford communication between the interior of the steam pipeand the vent. To the outer'end of the steam pipe, I secure a head 2 which may surround the said free end of the pipe, as shown inthe drawings or be coupled thereto in any other 'con-' venient or preferred manner; This head is provided at one side with a lateral guide which may conveniently be in the form of a bifurcated lug, shown at 3, and through the sa d guide passes the outer end of abrac'e 4 which has its inner end secured to a clamping collar or. ring 5 passing around thepipe 1, preferably between the steam' pipe and an annular shoulder on the vent pipe. The head 2 is provided with an outlet passage 6, which passage communicates with the central recess or chamber] in the inner end of the head so as to receive the water condensing in the pipe and the outlet may be threaded to receive theend of apipe for carrying ofl the water.- A val'veS' is provided to seat against the inner end of the passage 6 and is constructed with a stem 9 which passes through and projects beyond the end of the head, as clearly shown, a spring 10 being coiled around the said stem ap lication filedlllliareh 14,1916. se i i n'o. 84,134,

f p e qn t a Patented-July 25, 1 916. V

between the outer end of the head a stopwll on' the stem. A packingboxyindicated;at; 10"may be provided around the valve stem to prevent leakage as will be readily understood. A lever '12 isipivoted at itsupperend to th'e outer end of the brace this lever bears a gainst the outer end of the valve stem,ftlie intermediate portion] of the lever I benig provided awith. fan opening through which a pin 3 13, projecting from the guideIB, extends,the leverfbeing mounted 'orjsupporting {armqt and thelower end of; i I

to rockj'on said pin longitudinally of the same, I A thumb-hut 14 isfmounted upon 4 the outer endoffthisfpin and "bears against the 'outervsidevofrthe; lever so as to adjust" l the same, whereby the lever will always be in contact with the outerIend of the stem 9- 'and the propertensionof thespring10 will a '15 1' a be maintained. The idistan cej'from fthe ,,point where thejpin 13 passeslth'rough the lever to thepivotl5 by which the lever [is attached to theTbra'ceor arm l should' be less than the distance from the pin 13' to] the end ofthe valvestem 9, the ratio being such. aswill givetheproper throw to the j I valve., t I v The construction and arrangement ofthe several parts of the device being thus made known, it isthoughtthat the operation of the samewillbe readily understood. The

vent pipe 1' should be constructed of some perature changes so that it'will expand and contract as the, temperature of the steam rises and falls. Assuming that the steam has a i been cut oif or has' fallen to a low temperamaterial which is readily responsive to temture so that it condensesrapidly, the pipel will contract and the contracting movement will, of course, bring thehead 2 closer to the inner end of the brace or supporting arm 4'.

' The lever 12being held on the pin '13 by the i p I L nut 14 will, of course, follow the movement of the head 2, but, as the supporting armor ace 4 is notthermostatic like the vent pipe,

I elower end of the lever will/swing farther than the upper portion of the same,the result being that the tension of the spring 10 v will be overcome and the valve stem 9 pushed inwardly a'greater distance than the head 2 moves so that'the valve 8 will be unseated and the'water permitted to drain through the passage 6.1 Whenthe steam is again turned on, the pipe 1, of course, will y expand and the lower or freeend of the lever 12 will move outwardly, the movement being greater than theexpansion of the pipe so that the valve 8 will be permitted to seat, thereby cutting oil the flow through the passage 6 and, consequently, preventing the es cape of steam.

It will be readily noted that I have provided an exceedingly simple device whereby the water which condenses and collects in the thermostatic pipe 1 and the chamber 7 will be permitted automatically to escape while escape and loss of steam will be automatically prevented. It will be understood, of course, that the device will be secured to the steam pipe in such a position that the natural flow of the water will be downward to the chamber 7 and thence through the passage 6 and it will also be understood that this passage 6 may be opened through the side or through the end of the head :2 or through both the side and the end. The supporting arm or brace 4 passes freely through the guide 3. and is not secured to said guide so that relative movement of the parts is permitted but the arm will be held in the plane of the axis of the thermostatic pipe and, consequently, twisting of the lever will be prevented. The device, obviously, may be applied to a heating system now al ready installed in a. building or may be used as a part of new installations.

lVhile the device is intended more particularly for heating systems, it may be used in apparatus for other purposes without in volving any departure from its essential features.

Having thus described the invention, what is claimed as new is In a device for the purpose set forth, the combination of a thermostatic tube, a head fitted to and extending over the outer end of the bore of said tube and provided with a laterally projecting guide, the head being constructed with an outlet leading from the tube, a pin projecting longitudinally from the outer end of said head, a bar disposed at one side of and fixed at one end to the tube and projecting at its opposite end beyond said head and through the guide thereon, a valve seating against the inner end of the outlet from the head and having a. stem passing longitudinally through the head, a lever pivoted to the outer free end of the fixed bar and having its intermediate portion mounted to oscillate on the pin, the free end of said lever bearing against the outer end of the valve stem, an adjusting nut mounted upon the said pin and bearing against the outer side of the lever, a stop on the valve stem, and a spring coiled around the valve stem between said stop and the end of the head whereby the valve will be normally seated and upon contraction of the tube will be moved longitudinally in the same and unseated.

In testimony whereof I aflix my signature.

ANDREW POSPESEL. a 3.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latcnts. Washington, D. G. 

